Improvement in platform-gears for vehicles



H. s. CLARK;

Platform-Gear for Vehicles.

Patented Sept. 1,1874.

INVENTOR ATTORNEYS.

THE GIRMSHICCO. PHOTO -L|TH.35& +1 PARK PLACEJLY.

UNITED STATES PATENT OFFICE.

HARRY S. CLARK, OF TOWANDA, PENNSYLVANIA.

IMPROVEMENT IN PLATFORM-GEARS FOR VEHICLES.

Specification forming part of Letters Patent No. 154,584, datedSeptember 1, 1874; application filed February 28, 1874.

V and I do hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings, making a part 7 of thisspecification, and to the letters and figures of reference markedthereon.

Figure 1 of the drawingisarepresentation of a plan view of my buggyplatform. Figs. 2 and 3 are sectional views of the same.

This invention has relation to the construction of platform-gears forbuggies and other vehicles; and it consists in combining, with a 4fifth-wheel, two cross-bars and four arched spring-extensions,and twoconnecting inverted arches thereof, which latter are secured upon theaxle bed, and have attachments on their front ends for thills or adraft-tongue.

The following is a description of my invention.

In the annexed drawings, A A designate four arched spring-extensions,which are fitted, by their inner ends, into, and bolted to, the halvedends of the rigid bars b b, which form the central portion of thesupports. Secured upon these bars I) b is, concentrically to theking-bolt, a fifth-wheel, C. These springs A A are suspended from theends of side springs D D by means of stirrup-connections c c f, soconstructed as to allow free play of the four springs, and also a readydetachment front ends are constructed with eyes, for the attachment tothem of shafts or a draft-tongue. The draft is thus in line with theside springs D D, and directly from the axle-bed.

These side springs are of the semi-elliptic kind, and they may becomposed of a number of leaves, secured together in the usual wellknownmanner of making such springs.

The spring-extensions A A are composed of metal leaves a a, rigidlysecured to the inflexible bars b b, which latter are, preferably, madeof wood, and they have the ring or fifthwheel 0 secured to their uppersides. These rigid bars I) are strengthened, by means of trussed bracesc g, so that they will uniformly transfer the weight put upon .them tothe four springs.

It will be seen. from the above description, that Ihave an elasticplatform-gear, the crossed springs of which are sustained by sidesprings, which not only serve as means for supporting said crossedsprings upon the axle-bed, but they also serve as braces for thecrossed. sprin gs. 7

What I claim as new, and desire to secure by Letters Patent, is-

The combination, with the side springs, fifth-wheel, and rigid bars I)b, intersecting at the king-bolt, of the spring-extensions a a, boltedto the ends of said bars I) b, and the truss-braces e g, substantiallyas specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

HARRY S. CLARK.

Witnesses:

' E. O. DEW'EES,

, J. WELLs.

